1 files changed, 0 insertions, 550 deletions

diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
deleted file mode 100644
index 7d8b72d67c80..000000000000
--- a/fs/cifs/xattr.c
+++ /dev/null
@@ -1,550 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1
-/*
- *
- *   Copyright (c) International Business Machines  Corp., 2003, 2007
- *   Author(s): Steve French (sfrench@us.ibm.com)
- *
- */
-
-#include <linux/fs.h>
-#include <linux/posix_acl_xattr.h>
-#include <linux/slab.h>
-#include <linux/xattr.h>
-#include "cifsfs.h"
-#include "cifspdu.h"
-#include "cifsglob.h"
-#include "cifsproto.h"
-#include "cifs_debug.h"
-#include "cifs_fs_sb.h"
-#include "cifs_unicode.h"
-#include "cifs_ioctl.h"
-
-#define MAX_EA_VALUE_SIZE CIFSMaxBufSize
-#define CIFS_XATTR_CIFS_ACL "system.cifs_acl" /* DACL only */
-#define CIFS_XATTR_CIFS_NTSD "system.cifs_ntsd" /* owner plus DACL */
-#define CIFS_XATTR_CIFS_NTSD_FULL "system.cifs_ntsd_full" /* owner/DACL/SACL */
-#define CIFS_XATTR_ATTRIB "cifs.dosattrib"  /* full name: user.cifs.dosattrib */
-#define CIFS_XATTR_CREATETIME "cifs.creationtime"  /* user.cifs.creationtime */
-/*
- * Although these three are just aliases for the above, need to move away from
- * confusing users and using the 20+ year old term 'cifs' when it is no longer
- * secure, replaced by SMB2 (then even more highly secure SMB3) many years ago
- */
-#define SMB3_XATTR_CIFS_ACL "system.smb3_acl" /* DACL only */
-#define SMB3_XATTR_CIFS_NTSD "system.smb3_ntsd" /* owner plus DACL */
-#define SMB3_XATTR_CIFS_NTSD_FULL "system.smb3_ntsd_full" /* owner/DACL/SACL */
-#define SMB3_XATTR_ATTRIB "smb3.dosattrib"  /* full name: user.smb3.dosattrib */
-#define SMB3_XATTR_CREATETIME "smb3.creationtime"  /* user.smb3.creationtime */
-/* BB need to add server (Samba e.g) support for security and trusted prefix */
-
-enum { XATTR_USER, XATTR_CIFS_ACL, XATTR_ACL_ACCESS, XATTR_ACL_DEFAULT,
-	XATTR_CIFS_NTSD, XATTR_CIFS_NTSD_FULL };
-
-static int cifs_attrib_set(unsigned int xid, struct cifs_tcon *pTcon,
-			   struct inode *inode, const char *full_path,
-			   const void *value, size_t size)
-{
-	ssize_t rc = -EOPNOTSUPP;
-	__u32 *pattrib = (__u32 *)value;
-	__u32 attrib;
-	FILE_BASIC_INFO info_buf;
-
-	if ((value == NULL) || (size != sizeof(__u32)))
-		return -ERANGE;
-
-	memset(&info_buf, 0, sizeof(info_buf));
-	attrib = *pattrib;
-	info_buf.Attributes = cpu_to_le32(attrib);
-	if (pTcon->ses->server->ops->set_file_info)
-		rc = pTcon->ses->server->ops->set_file_info(inode, full_path,
-				&info_buf, xid);
-	if (rc == 0)
-		CIFS_I(inode)->cifsAttrs = attrib;
-
-	return rc;
-}
-
-static int cifs_creation_time_set(unsigned int xid, struct cifs_tcon *pTcon,
-				  struct inode *inode, const char *full_path,
-				  const void *value, size_t size)
-{
-	ssize_t rc = -EOPNOTSUPP;
-	__u64 *pcreation_time = (__u64 *)value;
-	__u64 creation_time;
-	FILE_BASIC_INFO info_buf;
-
-	if ((value == NULL) || (size != sizeof(__u64)))
-		return -ERANGE;
-
-	memset(&info_buf, 0, sizeof(info_buf));
-	creation_time = *pcreation_time;
-	info_buf.CreationTime = cpu_to_le64(creation_time);
-	if (pTcon->ses->server->ops->set_file_info)
-		rc = pTcon->ses->server->ops->set_file_info(inode, full_path,
-				&info_buf, xid);
-	if (rc == 0)
-		CIFS_I(inode)->createtime = creation_time;
-
-	return rc;
-}
-
-static int cifs_xattr_set(const struct xattr_handler *handler,
-			  struct user_namespace *mnt_userns,
-			  struct dentry *dentry, struct inode *inode,
-			  const char *name, const void *value,
-			  size_t size, int flags)
-{
-	int rc = -EOPNOTSUPP;
-	unsigned int xid;
-	struct super_block *sb = dentry->d_sb;
-	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
-	struct tcon_link *tlink;
-	struct cifs_tcon *pTcon;
-	const char *full_path;
-	void *page;
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink))
-		return PTR_ERR(tlink);
-	pTcon = tlink_tcon(tlink);
-
-	xid = get_xid();
-	page = alloc_dentry_path();
-
-	full_path = build_path_from_dentry(dentry, page);
-	if (IS_ERR(full_path)) {
-		rc = PTR_ERR(full_path);
-		goto out;
-	}
-	/* return dos attributes as pseudo xattr */
-	/* return alt name if available as pseudo attr */
-
-	/* if proc/fs/cifs/streamstoxattr is set then
-		search server for EAs or streams to
-		returns as xattrs */
-	if (size > MAX_EA_VALUE_SIZE) {
-		cifs_dbg(FYI, "size of EA value too large\n");
-		rc = -EOPNOTSUPP;
-		goto out;
-	}
-
-	switch (handler->flags) {
-	case XATTR_USER:
-		cifs_dbg(FYI, "%s:setting user xattr %s\n", __func__, name);
-		if ((strcmp(name, CIFS_XATTR_ATTRIB) == 0) ||
-		    (strcmp(name, SMB3_XATTR_ATTRIB) == 0)) {
-			rc = cifs_attrib_set(xid, pTcon, inode, full_path,
-					value, size);
-			if (rc == 0) /* force revalidate of the inode */
-				CIFS_I(inode)->time = 0;
-			break;
-		} else if ((strcmp(name, CIFS_XATTR_CREATETIME) == 0) ||
-			   (strcmp(name, SMB3_XATTR_CREATETIME) == 0)) {
-			rc = cifs_creation_time_set(xid, pTcon, inode,
-					full_path, value, size);
-			if (rc == 0) /* force revalidate of the inode */
-				CIFS_I(inode)->time = 0;
-			break;
-		}
-
-		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
-			goto out;
-
-		if (pTcon->ses->server->ops->set_EA)
-			rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
-				full_path, name, value, (__u16)size,
-				cifs_sb->local_nls, cifs_sb);
-		break;
-
-	case XATTR_CIFS_ACL:
-	case XATTR_CIFS_NTSD:
-	case XATTR_CIFS_NTSD_FULL: {
-		struct cifs_ntsd *pacl;
-
-		if (!value)
-			goto out;
-		pacl = kmalloc(size, GFP_KERNEL);
-		if (!pacl) {
-			rc = -ENOMEM;
-		} else {
-			memcpy(pacl, value, size);
-			if (pTcon->ses->server->ops->set_acl) {
-				int aclflags = 0;
-				rc = 0;
-
-				switch (handler->flags) {
-				case XATTR_CIFS_NTSD_FULL:
-					aclflags = (CIFS_ACL_OWNER |
-						    CIFS_ACL_DACL |
-						    CIFS_ACL_SACL);
-					break;
-				case XATTR_CIFS_NTSD:
-					aclflags = (CIFS_ACL_OWNER |
-						    CIFS_ACL_DACL);
-					break;
-				case XATTR_CIFS_ACL:
-				default:
-					aclflags = CIFS_ACL_DACL;
-				}
-
-				rc = pTcon->ses->server->ops->set_acl(pacl,
-					size, inode, full_path, aclflags);
-			} else {
-				rc = -EOPNOTSUPP;
-			}
-			if (rc == 0) /* force revalidate of the inode */
-				CIFS_I(inode)->time = 0;
-			kfree(pacl);
-		}
-		break;
-	}
-
-	case XATTR_ACL_ACCESS:
-#ifdef CONFIG_CIFS_POSIX
-		if (!value)
-			goto out;
-		if (sb->s_flags & SB_POSIXACL)
-			rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
-				value, (const int)size,
-				ACL_TYPE_ACCESS, cifs_sb->local_nls,
-				cifs_remap(cifs_sb));
-#endif  /* CONFIG_CIFS_POSIX */
-		break;
-
-	case XATTR_ACL_DEFAULT:
-#ifdef CONFIG_CIFS_POSIX
-		if (!value)
-			goto out;
-		if (sb->s_flags & SB_POSIXACL)
-			rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
-				value, (const int)size,
-				ACL_TYPE_DEFAULT, cifs_sb->local_nls,
-				cifs_remap(cifs_sb));
-#endif  /* CONFIG_CIFS_POSIX */
-		break;
-	}
-
-out:
-	free_dentry_path(page);
-	free_xid(xid);
-	cifs_put_tlink(tlink);
-	return rc;
-}
-
-static int cifs_attrib_get(struct dentry *dentry,
-			   struct inode *inode, void *value,
-			   size_t size)
-{
-	ssize_t rc;
-	__u32 *pattribute;
-
-	rc = cifs_revalidate_dentry_attr(dentry);
-
-	if (rc)
-		return rc;
-
-	if ((value == NULL) || (size == 0))
-		return sizeof(__u32);
-	else if (size < sizeof(__u32))
-		return -ERANGE;
-
-	/* return dos attributes as pseudo xattr */
-	pattribute = (__u32 *)value;
-	*pattribute = CIFS_I(inode)->cifsAttrs;
-
-	return sizeof(__u32);
-}
-
-static int cifs_creation_time_get(struct dentry *dentry, struct inode *inode,
-				  void *value, size_t size)
-{
-	ssize_t rc;
-	__u64 *pcreatetime;
-
-	rc = cifs_revalidate_dentry_attr(dentry);
-	if (rc)
-		return rc;
-
-	if ((value == NULL) || (size == 0))
-		return sizeof(__u64);
-	else if (size < sizeof(__u64))
-		return -ERANGE;
-
-	/* return dos attributes as pseudo xattr */
-	pcreatetime = (__u64 *)value;
-	*pcreatetime = CIFS_I(inode)->createtime;
-	return sizeof(__u64);
-}
-
-
-static int cifs_xattr_get(const struct xattr_handler *handler,
-			  struct dentry *dentry, struct inode *inode,
-			  const char *name, void *value, size_t size)
-{
-	ssize_t rc = -EOPNOTSUPP;
-	unsigned int xid;
-	struct super_block *sb = dentry->d_sb;
-	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
-	struct tcon_link *tlink;
-	struct cifs_tcon *pTcon;
-	const char *full_path;
-	void *page;
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink))
-		return PTR_ERR(tlink);
-	pTcon = tlink_tcon(tlink);
-
-	xid = get_xid();
-	page = alloc_dentry_path();
-
-	full_path = build_path_from_dentry(dentry, page);
-	if (IS_ERR(full_path)) {
-		rc = PTR_ERR(full_path);
-		goto out;
-	}
-
-	/* return alt name if available as pseudo attr */
-	switch (handler->flags) {
-	case XATTR_USER:
-		cifs_dbg(FYI, "%s:querying user xattr %s\n", __func__, name);
-		if ((strcmp(name, CIFS_XATTR_ATTRIB) == 0) ||
-		    (strcmp(name, SMB3_XATTR_ATTRIB) == 0)) {
-			rc = cifs_attrib_get(dentry, inode, value, size);
-			break;
-		} else if ((strcmp(name, CIFS_XATTR_CREATETIME) == 0) ||
-		    (strcmp(name, SMB3_XATTR_CREATETIME) == 0)) {
-			rc = cifs_creation_time_get(dentry, inode, value, size);
-			break;
-		}
-
-		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
-			goto out;
-
-		if (pTcon->ses->server->ops->query_all_EAs)
-			rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
-				full_path, name, value, size, cifs_sb);
-		break;
-
-	case XATTR_CIFS_ACL:
-	case XATTR_CIFS_NTSD:
-	case XATTR_CIFS_NTSD_FULL: {
-		/*
-		 * fetch owner, DACL, and SACL if asked for full descriptor,
-		 * fetch owner and DACL otherwise
-		 */
-		u32 acllen, extra_info;
-		struct cifs_ntsd *pacl;
-
-		if (pTcon->ses->server->ops->get_acl == NULL)
-			goto out; /* rc already EOPNOTSUPP */
-
-		if (handler->flags == XATTR_CIFS_NTSD_FULL) {
-			extra_info = SACL_SECINFO;
-		} else {
-			extra_info = 0;
-		}
-		pacl = pTcon->ses->server->ops->get_acl(cifs_sb,
-				inode, full_path, &acllen, extra_info);
-		if (IS_ERR(pacl)) {
-			rc = PTR_ERR(pacl);
-			cifs_dbg(VFS, "%s: error %zd getting sec desc\n",
-				 __func__, rc);
-		} else {
-			if (value) {
-				if (acllen > size)
-					acllen = -ERANGE;
-				else
-					memcpy(value, pacl, acllen);
-			}
-			rc = acllen;
-			kfree(pacl);
-		}
-		break;
-	}
-
-	case XATTR_ACL_ACCESS:
-#ifdef CONFIG_CIFS_POSIX
-		if (sb->s_flags & SB_POSIXACL)
-			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
-				value, size, ACL_TYPE_ACCESS,
-				cifs_sb->local_nls,
-				cifs_remap(cifs_sb));
-#endif  /* CONFIG_CIFS_POSIX */
-		break;
-
-	case XATTR_ACL_DEFAULT:
-#ifdef CONFIG_CIFS_POSIX
-		if (sb->s_flags & SB_POSIXACL)
-			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
-				value, size, ACL_TYPE_DEFAULT,
-				cifs_sb->local_nls,
-				cifs_remap(cifs_sb));
-#endif  /* CONFIG_CIFS_POSIX */
-		break;
-	}
-
-	/* We could add an additional check for streams ie
-	    if proc/fs/cifs/streamstoxattr is set then
-		search server for EAs or streams to
-		returns as xattrs */
-
-	if (rc == -EINVAL)
-		rc = -EOPNOTSUPP;
-
-out:
-	free_dentry_path(page);
-	free_xid(xid);
-	cifs_put_tlink(tlink);
-	return rc;
-}
-
-ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size)
-{
-	ssize_t rc = -EOPNOTSUPP;
-	unsigned int xid;
-	struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
-	struct tcon_link *tlink;
-	struct cifs_tcon *pTcon;
-	const char *full_path;
-	void *page;
-
-	if (unlikely(cifs_forced_shutdown(cifs_sb)))
-		return -EIO;
-
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
-		return -EOPNOTSUPP;
-
-	tlink = cifs_sb_tlink(cifs_sb);
-	if (IS_ERR(tlink))
-		return PTR_ERR(tlink);
-	pTcon = tlink_tcon(tlink);
-
-	xid = get_xid();
-	page = alloc_dentry_path();
-
-	full_path = build_path_from_dentry(direntry, page);
-	if (IS_ERR(full_path)) {
-		rc = PTR_ERR(full_path);
-		goto list_ea_exit;
-	}
-	/* return dos attributes as pseudo xattr */
-	/* return alt name if available as pseudo attr */
-
-	/* if proc/fs/cifs/streamstoxattr is set then
-		search server for EAs or streams to
-		returns as xattrs */
-
-	if (pTcon->ses->server->ops->query_all_EAs)
-		rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
-				full_path, NULL, data, buf_size, cifs_sb);
-list_ea_exit:
-	free_dentry_path(page);
-	free_xid(xid);
-	cifs_put_tlink(tlink);
-	return rc;
-}
-
-static const struct xattr_handler cifs_user_xattr_handler = {
-	.prefix = XATTR_USER_PREFIX,
-	.flags = XATTR_USER,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-/* os2.* attributes are treated like user.* attributes */
-static const struct xattr_handler cifs_os2_xattr_handler = {
-	.prefix = XATTR_OS2_PREFIX,
-	.flags = XATTR_USER,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-static const struct xattr_handler cifs_cifs_acl_xattr_handler = {
-	.name = CIFS_XATTR_CIFS_ACL,
-	.flags = XATTR_CIFS_ACL,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-/*
- * Although this is just an alias for the above, need to move away from
- * confusing users and using the 20 year old term 'cifs' when it is no
- * longer secure and was replaced by SMB2/SMB3 a long time ago, and
- * SMB3 and later are highly secure.
- */
-static const struct xattr_handler smb3_acl_xattr_handler = {
-	.name = SMB3_XATTR_CIFS_ACL,
-	.flags = XATTR_CIFS_ACL,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-static const struct xattr_handler cifs_cifs_ntsd_xattr_handler = {
-	.name = CIFS_XATTR_CIFS_NTSD,
-	.flags = XATTR_CIFS_NTSD,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-/*
- * Although this is just an alias for the above, need to move away from
- * confusing users and using the 20 year old term 'cifs' when it is no
- * longer secure and was replaced by SMB2/SMB3 a long time ago, and
- * SMB3 and later are highly secure.
- */
-static const struct xattr_handler smb3_ntsd_xattr_handler = {
-	.name = SMB3_XATTR_CIFS_NTSD,
-	.flags = XATTR_CIFS_NTSD,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-static const struct xattr_handler cifs_cifs_ntsd_full_xattr_handler = {
-	.name = CIFS_XATTR_CIFS_NTSD_FULL,
-	.flags = XATTR_CIFS_NTSD_FULL,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-/*
- * Although this is just an alias for the above, need to move away from
- * confusing users and using the 20 year old term 'cifs' when it is no
- * longer secure and was replaced by SMB2/SMB3 a long time ago, and
- * SMB3 and later are highly secure.
- */
-static const struct xattr_handler smb3_ntsd_full_xattr_handler = {
-	.name = SMB3_XATTR_CIFS_NTSD_FULL,
-	.flags = XATTR_CIFS_NTSD_FULL,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-
-static const struct xattr_handler cifs_posix_acl_access_xattr_handler = {
-	.name = XATTR_NAME_POSIX_ACL_ACCESS,
-	.flags = XATTR_ACL_ACCESS,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-static const struct xattr_handler cifs_posix_acl_default_xattr_handler = {
-	.name = XATTR_NAME_POSIX_ACL_DEFAULT,
-	.flags = XATTR_ACL_DEFAULT,
-	.get = cifs_xattr_get,
-	.set = cifs_xattr_set,
-};
-
-const struct xattr_handler *cifs_xattr_handlers[] = {
-	&cifs_user_xattr_handler,
-	&cifs_os2_xattr_handler,
-	&cifs_cifs_acl_xattr_handler,
-	&smb3_acl_xattr_handler, /* alias for above since avoiding "cifs" */
-	&cifs_cifs_ntsd_xattr_handler,
-	&smb3_ntsd_xattr_handler, /* alias for above since avoiding "cifs" */
-	&cifs_cifs_ntsd_full_xattr_handler,
-	&smb3_ntsd_full_xattr_handler, /* alias for above since avoiding "cifs" */
-	&cifs_posix_acl_access_xattr_handler,
-	&cifs_posix_acl_default_xattr_handler,
-	NULL
-};